Continuity mistake: When Tom captures Quacker in his bag, he has nothing around his neck. But when we see Tom in the next shot, a napkin appears from nowhere.
Continuity mistake: When Jerry is dressing up Quacker in his schoolboy uniform, you can see the door to his house is only halfway open. But when he goes back into his house to fetch a mirror, the door is now wide open.
Continuity mistake: When Tom pours Quacker out of the bag and onto the dish, he has a napkin around his neck. But when Tom crashes into the wall in the next shot, the napkin has disappeared.
Continuity mistake: When the female duckling tells Quacker that he's cute, Quacker stands up from the rock he is sitting on and then runs under a branch. But when Quacker holds her arm, the rock has disappeared.
Continuity mistake: When Quacker walks off, thinking nobody loves him, you can see there is just grass in front of him but in the next shot he is walking in front of a pond.
Continuity mistake: When Tom is searching for Quacker, you can see that he is holding a fork in his right hand, but when he finds Quacker in a sandwich, the fork has disappeared.
Continuity mistake: When Quacker walks off with the female duckling at the end of the cartoon, the female duckling's hat and umbrella are pink but in the next shot they are now blue.
Continuity mistake: When Quacker shows Jerry the picture of the ugly duckling in his book, you can see the book is standing up, but when we see the picture in the next shot, the book is lying flat on the ground.
